Where Can Extraterrestrial Life Be Found in the Inner Solar System?

[@junetter]

Astrum I just want to say I love all your videos! They are quite relaxing, and though I have read / seen some of this material before your presentation of the subject matter makes me want to sit back and just enjoy. The feeling your videos give me is the same one I felt when I first learned about space as a child. Hope you keep making videos, I'll keep watching :)

[@sunnyjim1355]

0:34 Life existed on Earth way before it developed an oxygen rich atmosphere... it was actually life that created it! So that's not a pre-requisite for life. In fact oxygen is a very toxic and reactive gas - live had to evolve to deal with it.

[@spxur]

Piotr Kozbial | I think he meant animals thst lived in the sea.

[@anthonyhutchins2300]

Lol he's right... Cyanobacteria oxidized the earth. Meaning life existed before the atmosphere was rich with oxygen.

[@hersonlamolli3317]

You are close but you are reasoning.

[@DOGPOOCHOGENIUS]

I like the way how you think

[@doggs4life788]

Bruh there could be life on like sulfuric acid air planets

[@UAPJedi]

Arthur C Clark “Two possibilities exist: Either we are alone in the Universe or we are not. Both are equally terrifying”.

[@yeeeet1406]

muppetnumpty65 its not terrifying

[@UAPJedi]

Yeeeet it’s a quote from Arthur C Clark! Get over yourself!

[@koncs1791]

do u think someone just created this big universe or (universes) for just us?

[@UAPJedi]

Konhz7 Roblox Nope! Do you?

[@Alex-xn2gk]

Naaah

[@noneofyourbeeswax01]

_"Life, uh... finds a way..."_ Who can argue with the wisdom of Jeff Goldblum?

[@andrewsjacobs4707]

Wisdom of the world is foolishness to God

[@theothertroll]

Who? Anyone that exists in reality ~ and Jeff merely spoke the words, but as a fictional character addressing life that already existed that was recreated in a fictional way so a movie company could make a buck off morons who think movies are reality ~

[@noneofyourbeeswax01]

@@theothertroll Dude, fucking lighten up. Do you not recognise a tongue-in-cheek comments when you see it? What am I asking, 0f _course_ you don't...

[@sgn4899]

Well life is found in the the most unexpected places in/on earth so there's more to this.

[@MichaelGarland]

Quality output every time,thankyou.

[@leviowen9410]

True True

[@NOTNOTJON]

agree, except was disappointed in this video when the photo of what looks like micro organisms from Mars was shown and not immediately rebuffed. The area on that rock which shows what looks like bacteria was taken from another angle and completely reveals that the structures are just rock ridges and not at all life.

[@rosiebanks5618]

I love the way you communicate the science. Beautiful music and pictures. Many thanks

[@josephpecoul4948]

What drawers me to your chanel is the obvious I can't wrap my mind around most of the math and physics but in my sole where I don't need to understand the nuts and bolts of space and time is a curiosity that is insatiable for information. Thanks for the video.

[@JohnnyKimchi]

I love watching your videos before going to sleep. Your voice is so calm and the information is great to contemplate! Great work!

[@bsn955]

this channel is better than other science/space channels because of the visuals. great job

[@Kiromony]

This a very insteresting thing, really love this channel

[@TheJlook2000]

Concise and fascinating videos

[@jorg58]

Allways a pleasure to see your fine compilations of brilliant video material combined with your enthusiastic but calm voice over - as a true explainer of what an where life in our solar system could be. Go on with that.

[@edgarscirulis1129]

I've been waiting for your video for ages.. You are the best youtuber about cosmos!

[@yoBigWave]

Always great seeing Astrum in my sub feed

[@shmookins]

I wish they would do missions to Encealdus or Europa because they may have liquid oceans.

[@hawkdsl]

I would be shocked if there is no life on Europa. Its going to be really hard to get through all that ice though. Makes me sad because I might be already gone when they find it

[@shmookins]

@@hawkdsl They can capture the water from the plumes shooting out or from the frozen surface since it is frozen water that came out from the inside. As for living long enough, if you can make it for about 20 years or so we should have samples by then. :)

[@blasterkid2014]

your channel is amazing....really great work, insightful, educational, and beautiful looking videos as well. I watch your playlists daily.

[@morskojvolk]

Waited until Sunday morning to watch this: it went very well with coffee and a bagel.

[@AH-nc6vv]

You make such incredible videos dude, please keep it up. I love your stuff and the quality you provide is always amazing.

[@mycatsapanther9236]

love all your videos, I find them all very interesting. I look forward to seeing your work in the future.

[@christeribaren]

Keep on produce this kind of videos. Watch every one of them. Greetings from sweden...

[@79981086]

As always your videos are made with great quality... thanks

[@brozbro]

anything is 'possible'; less is 'probable'.

[@jhaytorres1143]

You deserve 10M subscribers

[@virginiatyree6705]

6 2 2018 Hey Jhay Torres, I agree! Spread the word. Be well. v

[@batatachibbbez]

Awesome videos you deserve more attention👍👍

[@Speak_Out_and_Remove_All_Doubt]

I love that China is starting to stretch its space-legs, this hopefully will spur on the US, ESA and maybe the Russian space programs too so that they don't get left behind. Private companies looking to make money from space will also boost development and innovation, asteroid mining, space tourism, etc. What I would love more than any of the currently planned stuff (putting men back on the moon, putting men on Mars, etc) would be to have permanent orbiters and also land rovers/diggers on some of Jupiter's and Saturn's moon, maybe Neptune's Triton too. These are the places we should be looking to live outside of Earth, huge amounts of liquid water if you melt through the ice meaning all the oxygen we need to breath and all the hydrogen fuel we need to product energy, plus temperatures are not too bad either hence the liquid water.

[@bluefirex24]

Keep it up bud. I can't wait for part 2!

[@HectorMachCesar]

Your videos are great for learning and understanding science. Thank you!

[@BettyOs]

Brilliant work as always. Thank you so much Alex!!

[@khanimran1238]

Great video man

[@pigwag]

Keep up the good work. I always look forward to your work 😀

[@davidc.pierce9631]

Superb video!

[@chanel-5397]

Another awesome, informational & educational video Alex,I learn something new everytime I watch your channel,thank you

[@OopsieBoopsies]

your content is so amazing. i love it. keep on making this awesome content.

[@forestmanzpedia]

There are more than trillion planets. There must be life somewhere.

[@NoCumBacksiFunny]

Just in our galaxy*

[@slum3947]

Honestly I hope so..

[@cuff1747]

Multiply that by a couple nonmillion

[@tankgrief1031]

a LOT LOT more. ​ About 100 billion stars in our galaxy alone - the vast majority will have planets. Even if the average is only one planet per star (probably way too low), thats at least 100 billion planets. And we know of at least 100 billion galaxies in the known universe. About 10^22 is a low estimate.

[@jeremygongora3148]

I believe there is other life out there somewhere there has to be it wouldnt make sense with so many other planets to not have other forms of life out there 💯💯💯

[@danielhoing2328]

Great channel!

[@doggs4life788]

Wouldn’t it be funny if the aliens we found were found in the same solar system as us

[@peesweezy4553]

Can you do a video on the history of Mars from it's birth till now?

[@anjiyarra2690]

Yes we do believe We Are Not Alone

[@Rymontp]

Thanks for the video :)

[@starmole5000]

Very cool! Enjoyed as always

[@ghetto29fab6]

I love your videos. This is so fascinating

[@leviowen9410]

Thanks Alex I really appreciate your video's great work love ur channel.

[@uprightape100]

Some staggeringly beautiful images......thank you so much. And thank NASA and all others for attaining those lovely pics.

[@sulijoo]

Our search for life seems so haphazard. 1)Have we agreed what 'life' means? 2) Are we just looking for microbes, or are we looking for sentient beings (NASA hates discussing EBEs to any serious degree)? 3)What criteria are we using to measure failure or success? 4)Could we even recognise alien life if we found it (remember the 'Martian meteorite' microbes back in '96 that turned out to be terrestrial life?). 5)Our own definition of life may be so narrow it will prevent us from truly finding any, because it will lead us away from the unexpected or unpredictable. I think we need to address these issues before we even starting to look for ET; we're so in a hurry we don't even know what we're looking for, or know what it is when we find it.

[@davidsearle9228]

I love stuff like this and have taken a keen interest in the Mars program . I have my own theory based upon the “is there a star gate documentary” that opened my eyes to the possibility of life on other planets and the true story around Noah’s ark.

[@TazManiac008]

I can hardly wait for part 2.

[@hamidkhan262]

Superb content buddy.

[@lyndseywilliams3895]

Missed you astrum. Hello again xx

[@ghicu9128]

Amazing video

[@dr_spacepirate]

Just awesome.

[@angelleon3401]

I missed your videos man!

[@thatswhatithought6519]

Ha gayy

[@michaelparker8657]

There are so many factors that combine to make Earth habitable..... it makes me seriously doubt the existence of life elsewhere.

[@JAXXNCREATED]

Imagine if tons of aliens come to our planet when they know it’s in danger and they save us 😳😳

[@wildmanjeff42]

love your videos !

A very informative video. Thank you !

[@BalingMusicFactory]

Great video, as always. Thanks! If you ever make a video about neutron stars someday you would have my full attention, I think they're really fascinating objects in our universe

[@sasikumar-gv9kl]

Sir Your every videos are so great and worthy So we got great news about space Upload more we are waiting for....

[@auntvesuvi3872]

Thank you, Alex! 🦠

[@slicky_27]

Great Video, thank you.

[@80sHairMetalFan]

Looking forward to part 2.

[@lucho5122]

This is very good quality video. And very interesting subject.

[@alifrafizad7535]

i love the way you talk 👍🏻

[@TheShollen]

amazing and very informative . thank you

[@chad_bro_chill]

To make Venus worse, it appears to have a pretty young surface (few craters) and lacks visible plate tectonics, suggesting it might restructure it's surface every so often (geologically-speaking).

[@donharrus9994]

Very good videos for a layman to comprehend and funny too geezer's on the poles

[@gabrielcroft4217]

I love astronomy,i mean astrum channel i learned a lot from here thank you.

[@Infinit3Enigma]

I love the clips that had a cfd simulation in it!

[@cluedin]

This is excellent thank you

[@arnoldcranium]

Great vid bro, but in my opinion its a futile search the resources could be spent on more pressing matters..

[@1drummer172]

“There’s no place like home!”; thank you Lord.🙏

[@davidrosner6267]

Life with a different biochemistry could have a very different "Goldilocks Zone" than organic based life on Earth. While I certainly wouldn't rule out organic exo-life, the Goldilocks Zone that astronomers use when searching for life on other products could just be a product of the habitats preferred by humans and other Earth-based life.

[@KoolBreeze420]

If we lower the odds of life in the universe is a mathematical certainty if we give a very low probability number then that would indicate that life is abundant in the universe, at some time or another, many may be extinct, many may not have left single-cell organism stage, on top of that, we could have evolved from alien organic materials.

[@khloerabnta4995]

Life here on earth could be completely different then life on other planets. As we know life can thrive in extremely harsh conditions. And life can adapt in amazing ways. Scientists today are realizing this. And searching for new ways to find life. Even microbial life would be a huge discovery.

[@will2Collett]

the third rock from the sun, a decent start point.

[@thepilgrim1581]

NASA - National Aeronautics on Space Assumptions

[@justinebrink4056]

Gorgeous video as always ♥. I was wondering about Europa and Titan as possible places where life could exist?

[@nacl7991]

Extrasolar Systems coming soon? You know im hyped for some new Infos and stuff from the Trappist system ;p

[@astrumspace]

Exoplanets will be part 3 :)

[@arnoldles858]

I wouldnt be surprised if there was life on Mercury or Venus. Because living things adapt to the environment they live in and we cant expect them to need what we need.

[@Hannodb1961]

No, there won't be, and life can't magically adapt to just any environment. It is restricted by the limitations placed on it by chemistry.

[@MrCrowebobby]

@@Hannodb1961 But we kept saying that about different places on earth and then finding out we were wrong.

[@Hannodb1961]

@@MrCrowebobby That is not a valid comparison. Earth is already a planet well suited for life, other planets, even Mars, is way more hostile to life than the places on earth where life struggles. Ever wondered why it's called "Extremophiles"? It's because life just barely manages to exist in those environments, and that is on a planet that has an abundance of life. Fact of the matter is, when you look at the complexity of biochemistry and the failure of abiogensis studies to make any meaningful progress, it is clear that life is highly improbable in the best of conditions. It isn't a matter of simply adding liquid water. I would argue 99% of even earth like planets are most likely sterile. If that is the case, then the odds of life existing elsewhere in our solar system is virtually 0.

[@mysteryhombre81]

@@Hannodb1961 Life as we know it... All life is, is a reproducable way that negative entropy is offset. So many possibilities. Although you may aslo be right.

[@Hannodb1961]

@@mysteryhombre81 Crystals are self replicating too. The difference is: Crystals self replicate due to simple chemical properties that makes it inevitable. You just need the right conditions, and crystals will form on its own. Life self replicate due to a genetic code (specified information) that is read and interpreted by complex protein molecules that does not form automatically when you just mix all the building blocks together. Because we live on a world filled with life, some people take it for granted and forget how extremely complex and improbable it is. Anyone who thinks that liquid water will inevitably lead to life, is ignorant of biochemistry. And if they're not ignorant of biochemistry, they're ignorant on a far deeper level.

[@leesugden8936]

I think the Goldilocks zone is wrong u can get heat and energy outside it.Europa and Enceladus are the best places to look for life

[@astrumspace]

Goldilocks zone for the potential for life on the surface. Part 2 will cover some of the moons with liquid oceans under the surface :)

[@travisgrant5608]

How do they know that the meterits are from Mars? Please explain.

[@roymckenzie3566]

Yes..... right here on Earth

[@matthewronsson]

"Alien species that is energy" is okay for Kneel DeAsse Tyson to consider feasible, but if you say these entities are spiritual those like him usually dismiss it as "non scientific". Talk about not seeing the forest for the trees.

[@jhwheuer]

Just a bit of nitpicking. Temperatur Celsius is written as an uppercase C. Lowercase c in this context mans the speed of light...

[@westonarey2502]

It is amazing how many people are excited about the concept of life outside the earth's biosphere. Why do they imagine such a thing is possible? Today we have accurate information about how life processes work. What we have learned in recent years makes abiogenesis absolutely impossible. Still, millions of dollars are earmarked for trying to find life on Mars, Europa or some other place without a radiation shield or source of energy that is not toxic to life. Why is this still an issue? It is because otherwise rational people would prefer to belive in Captain Kirk and Darth Vader than reality. Seth Shostak said on a nationally broadcast raio talk show that, "We do know this: life appeared on earth as soon as conditions became amenable for it, so it couldn't have been that much of a problem." Making such a statement so far outside of one's area of expertise is a great way to expose a person's ignorance. If you want to talk about the possibility of life appearing from nothing, put away your telescope and your radio eavesdropping equipment for a while and pick up a microscope. Once you begin to fathom the complexity of living cells, you will be humbled. Not to mention the engineering involved behind how living organisms move about, (flying, swimming, using rotary flagella) sense their surroundings, (sonar, sight, hearing, infrared detection) construct elaborate dwellings, (coral structures, termite mounds and bee nests with heating and cooling systems) communicate, migrate, find mates, hunt, and a myriad of other behaviors and abilities. No amount of randomness can account for all that we see.

[@sdc9368]

I'm so happy and satisfied with the life we find here on earth!

[@arora_for_life]

I think once we stop looking for earth like species and start thinking on a different level for an organism to survive we will start getting answer to the question "Are we alone in the universe?".

[@coffeezombiegreat9553]

I luv yor qualiti of vidios~ dood~

[@EtaCarinaeSC]

Oh, I came... this is so gud, keep it comin'

[@bigwsly]

If there is life on mercury Im gonna be happy

[@tankgrief1031]

My humble opinion - life is widespread but technology is rare. I hope in my lifetime we will at least have telescopes poweful enough for direct imaging and spectroscopic analysis of other planets atmospheres. We should at least be able to detect the signs of life then. Although I'd prefer my own personal starship :-(

[@faybrianhernandez2416]

They need only look at the star to know if it can harbor a planet that can harbor life.

[@SunilNagavelli]

We spend trillions of dollars to know how blessed we are to be on earth surviving on it every moment.

[@frankhoffman3566]

My opinion? Underground on Mars.Possibly underground on Mercury at the poles and/or underground along the day/night line. Underground on our moon. Microbial life only. Remotely possible underground on Martian moons

[@filmmade6214]

There was life on mars there could stuff be some in under water rivers

[@5mnz7fg]

How is it possible that fragments of Mars material can reach Earth? And not only reach earth but being undestroyed?

[@blackbirdpie217]

I wonder why methane on Mars is so interesting, as if it's an indicator of life.. There is an enormous amount of methane in the composition of Uranus, and Saturn's moon Titan has lakes rivers and rain of Methane as they think may occur in a smaller scale on Pluto- yet nobody is excitedly claiming "it could be a sign of life" in any of those places. Methane is common and Ubiquitous!

[@SchemeTintFocus]

How about rotation? Could a faster rotation affect the goldilox zone of a star?

[@Compguy321]

How about the possibility of life underground on the moon, and Mercury?

[@virginiatyree6705]

6 2 2018 Hello and good day Alex/Astrum, Another informative review; thank you! A comment, I have is how civil people are in the comment section! If that changes, I would hope those individuals go away...or their comments are deleted. Be well. v P.S.: I think you should have a gazillion subscribers.

[@hyacinthies]

Wonderful video. And I say this as a picky space loving video watcher. That was a lonf description of me .-.

[@OleOlson]

Our "Oxygen rich atmosphere" is not a situation that resulted for the benefit of life, it resulted as a result OF life. Terrestrial atmospheres are comprised of mostly CO2, which is the backbone of life, and O2 is the toxic gas produced from early life. It took the biosphere a LONG time to adapt to this, but it is biogenic in origin.